Subtitle Find & Replace
Search and replace text across all subtitle cues with regex, whole-word, and case-sensitive matching.
Drag & drop your subtitle file here
Drag and drop subtitle files here or click to browse
Find & Replace Features
Engineered for video editors and localization teams. Helps enforce common subtitle timing rules and formatting.
Subtitle Find & Replace Live Execution Demo
In-Memory Processing
File parsing, mutations, and time shifts for standard tools run in browser memory without sending subtitle files to our servers.
Millisecond Precision
Millisecond-accurate timecode parsing and arithmetic prevent synchronization drift across desktop and web players.
Fault-Tolerant Engine
Automatic multi-encoding detection and syntax sanitization gracefully handle malformed cues and unexpected linebreaks.
Who Needs Find & Replace?
Real-world scenarios across video post-production, course transcription, and global localization.
Translator Corrections
Fix a consistently mistranslated term across an entire subtitle file in one operation.
Name & Terminology Updates
Update character names, brand names, or terminology that changed during production.
Formatting Cleanup
Use regex to normalize punctuation, spacing, or repeated characters across all cues.
Fansub Consistency
Ensure consistent spelling and terminology across subtitle files from multiple translators.
OCR Error Fixes
Batch-correct common OCR errors like l/1, O/0, or rn/m confusion using regex patterns.
Speaker Label Edits
Rename or reformat speaker labels in transcript-style subtitles with a single replace.
How It Works
Streamlined end-to-end processing pipeline engineered for speed and precision.
Upload & Import
Upload your subtitle file.
Format Analysis
Enter your search term or regex pattern in the find field.
Configuration
Optionally enable regex, whole-word, or case-sensitive matching.
Processing
Enter your replacement text.
Verify & Export
Preview the match count, then click Replace All.
Delivery
Download the updated subtitle file.
Why Choose AllSubConverter?
Client-Side Privacy
Standard tools run in your browser so standard files are not uploaded to our servers.
Fast Local Parsing
Optimized processing engine parses and converts files directly in your browser.
Generous Batches
Up to 50 MB per file, 200 files or 1 GB total per batch.
Universal Compatibility
Runs in modern browsers across Windows, macOS, Linux, iOS, and Android.
More Subtitle Tools
Frequently Asked Questions
Yes. Enable the Regex option to use JavaScript regex patterns for both find and replace. This allows pattern-based matching like \d+ for numbers or capturing groups in replacements.
Yes. The tool shows a live match count as you type your search pattern, and you can review matched cues before clicking Replace All.
Input: SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI. Output: SRT or VTT.
No. All find and replace operations happen entirely in your browser. Your subtitle files never leave your device.
Whole-word mode only matches your search term when it appears as a complete word, not as part of a larger word. For example, searching for 'cat' will not match 'category'.
Yes. Find & Replace only modifies the text content of cues. All timestamps and subtitle structure are preserved exactly.
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